MSMQ 的持久化

MSMQ的消息默认是放在内存里面的. 重启服务或者断电的时候消息就没了. 对于重要的消息来讲这样肯定是不行的.

百度了好久也没发现如何持久化. 后来实在不行上Google 才找到对应的答案.
废话少说. 直接上答案.

标准答案就一句话 msg1.Recoverable = true;

System.Messaging.Message msg1 = new System.Messaging.Message(person);msg1.Recoverable = true;//为true 的时候进行持久化.每个信息的Recoverable 为true 那么持久保存mq.Send(msg1, transaction);

//下面的是全部的测试代码.. 可以不看..
//主测试方法

  public class TestMQ    {       static string path = ".\\private$\\TestMQ";        // 接收消息的函数         public static Object[] Receive()        {            MessageQueue mq;             if (MessageQueue.Exists(path))            {                mq = new MessageQueue(path);            }            else            {                mq = MessageQueue.Create(path);            }            // 定义消息队列中所有的消息种类（种类之间的顺序可以互换）              Type[] msgTypes = new Type[] { typeof(Person), typeof(Order), typeof(String) };            // 规定消息以XML格式编码              mq.Formatter = new XmlMessageFormatter(msgTypes);            // 定义事务              MessageQueueTransaction transaction = new MessageQueueTransaction();            try            {                // 如果消息队列采用了事务，则开始事务                  if (mq.Transactional)                    transaction.Begin();                System.Messaging.Message msg1 = mq.Receive(transaction);                Person person = (Person)msg1.Body;                System.Messaging.Message msg2 = mq.Receive(transaction);                Order order = (Order)msg2.Body;                System.Messaging.Message msg3 = mq.Receive(transaction);                string description = (String)msg3.Body;                // 如果消息队列采用了事务，则停止事务                  if (mq.Transactional)                    transaction.Commit();                return new Object[] { person, order, description };            }            catch (Exception ex)            {                // 如果消息队列采用了事务并且出现了异常，则终止事务                  if (mq.Transactional)                    transaction.Abort();                return null;            }        }        // 发送消息的函数         public static bool Send(Person person, Order order, string description)        {             MessageQueue mq;            if (MessageQueue.Exists(path))            {                mq = new MessageQueue(path);            }            else            {                mq = MessageQueue.Create(path);            }            mq.DefaultPropertiesToSend.Recoverable = true;  //为true 的时候进行持久化. 经测试好像没用.             //mq.DefaultPropertiesToSend.AcknowledgeType = AcknowledgeTypes.NegativeReceive; 消息是否需要反馈.            // 规定消息以XML格式编码              mq.Formatter = new XmlMessageFormatter(new Type[] { typeof(Person), typeof(Order), typeof(String) });            // 定义事务              MessageQueueTransaction transaction = new MessageQueueTransaction();            System.Messaging.Message msg1 = new System.Messaging.Message(person);            System.Messaging.Message msg2 = new System.Messaging.Message(order);             System.Messaging.Message msg3 = new System.Messaging.Message(description);            try            {                // 如果消息队列采用了事务，则开始事务                  if (mq.Transactional)                    transaction.Begin();                 msg1.Recoverable = true;//为true 的时候进行持久化.                mq.Send(msg1, transaction);                msg2.Recoverable = true;//为true 的时候进行持久化.                mq.Send(msg2, transaction);                msg3.Recoverable = false;//为true 的时候进行持久化.                mq.Send(msg3, transaction);                // 如果消息队列采用了事务，则停止事务                  if (mq.Transactional) {                                     transaction.Commit();                }                return true;            }            catch (Exception ex)            {                // 如果消息队列采用了事务并且出现了异常，则终止事务                  if (mq.Transactional)                    transaction.Abort();                return false;            }            finally            {                mq.Close();                msg1 = null;                msg2 = null;                msg3 = null;            }        }    }

下面是两个model类

 // 购物清单      public class Order    {        public Order()        {            Price = 0.0;            Number = 0;            Time = DateTime.Now;        }        public Order(Double price, UInt64 number, DateTime time)        {            Price = price;            Number = number;            Time = time;        }        // 物品单价          Double Price;        // 物品数量          UInt64 Number;        // 下单时间          DateTime Time;    }  

// 人员类      public class Person    {        public Person()        {            m_Name = "";            m_Age = 0;        }        public Person(string name, UInt16 age)        {            m_Name = name;            m_Age = age;        }        // 姓名          public string Name        {            get { return m_Name; }            set { m_Name = value; }        }        // 年龄          public UInt16 Age        {            get { return m_Age; }            set { m_Age = value; }        }        private string m_Name;        private UInt16 m_Age;    }  

    //发送按钮        private void 发送按钮_Click(object sender, EventArgs e)        {            for (int i = 0; i < 100000; i++)            {                Person person = new Person("Jackie", 30);                Order order = new Order(110.0, 10, DateTime.Now);                string description = "This is a new order.";                TestMQ.Send(person, order, description);                System.GC.Collect();            }         }

 private void 接收按钮_Click(object sender, EventArgs e)        {            // 接收消息。返回值为 null 时表示接收失败              Object[] message = TestMQ.Receive();            if (message != null)            {                // 当消息接收成功时，将消息依次取出并存入下面的对象中                  Person person = (Person)message[0];                Order prder = (Order)message[1];                string description = (string)message[2];                if (description == "This is a new order.")                {                    MessageBox.Show("消息接收成功 !");                }                else                {                    MessageBox.Show("消息接收失败 !");                }            }            else            {                MessageBox.Show("消息接收失败 !");            }          }